Bolt lock



Oct. 11, 1932. c. H. NEHLS 1,881,866

BOLT LOCK Filed Feb. 16, 1931 mgm and carrier ring; and

Cal

Patented Oct. 11, 1932 `UNITED STATES v` PATENTLOFFCE oI-IAnLEsI-I. NEHLS, OF NORTH CHICAGO, ILLINOIS, AssIGNoR To OAKES PRODUCTS CORPORATION, or NORTH CHICAGO,` ILLINOIs, A CORPORATION or MICHIGAN" BOLT Loox Application filed February 16, 1931. VSerial` No, 516,008.

This invention relates to lock structure for association with bolt-s for concealing and rendering a bolt inaccessible to the application of tools or otherwise afterthe bolt has been operated to secure together two or more elements whose separation by unauthorized persons is to'be prevented, theV invention being particularly useful in the automobile field for `guarding' against the unlawful removalv of spare parts from supports von the automobile body as for example sparetires or wheels.

rlhe lock structure of'my invention comof which elements the bolt extends or tol which the bolt is adapted to be secured, with the provision of an enclosing cap or guard for the boltV head, and key controlled lock means for locking the cap yin position, the features of the structure being the ready vaccessibility outside ofthe lock structure body of the bolt head by tools such as wrenches. y

The various features ofmy invention are disclosed on the accompanying drawing, on whichV v Figure 1 is a front eleva-tion of the lock structure FigureQ is a section on plane II-II of Figure 1 ofthe lock structure and a tire rim VFigure 3 is a similar section showing a modified arrangement.

The lock structure comprises a body jl() having at one end a'cylindrical chamber or pocket 11 through the bottom wall 12 of which is the passageway 13 for receiving the shank of a bolt B. Within the pocket is a bushing 14 having a passageway 15 registering lwith the passageway 13 for receiving the bolt shank, the end of the bushing being flush with or outside of the front face of the body 10. The bushing Vmay be detachable from `the pocket orvmay be secured therein by friction or other means, or may be formed integral with the body 10. n Y Y I have shown mylock structure applied for securing a tire rim 16 4to the ring 17 of a spare wheel tire which ring in practice is suitably secured on the body of an automotive vehicle. 1n the arrangement ofzFigure 2'the oarrierring has a-.lug 18 secured thereto and which is'threaded to receive the threaded end ofthebolt shank which has a head 19 integral therewith; After thel tire is applied to the ring y17, this shank of u`the Vbolt-is inserted through.v the .bushing and back wall' passageways 13 and 15" and thebolt is turned by means of a wrench applied to the head, the bolt head eventually abutting against the v r outer end of the bushing and so drawing the 4lock body againstv the rim to securely seat the rim on the ring and to thereafter-lock it against removal, the lock structure body Ahavingthe fiange or extension- 20 on its rear side shaped to properly fit the rim and the ,lug 18. nthe arrangement of vFigure 8 the bolt shank at its inner end is rigidly secured in the-lug 18 secured to the ring 17 and, its outer end is threaded for the reception of a head'19 in the Vform of a nut. ,I With this arrangement the lock body is appliedover the threadedend of the boltshank and against the tire riIn to be secured and the nut is thenapplied tothe threaded end ,Of' the shank to abut ,against the bushing` and to thus clamp the lo'ckstructure into posi-A Vtion` tolock :thef rim to the carrier ring,V f

It Win lor-noted um: the" boit head will be entirelyvoutside' of the front face, ofthe frame 10 so as to be readily accessible' for Y theapplication of wrenches Vor otherftools.

Y For enclosing'the bolt'head to. prevent the application of tools thereto I provide a cy-` lindrical ycap y21 whose inner diameter is -greater than'the greatest width of the bolt Y head and whose inner end 22 is of `reduced 'external' diameter soV as tot into the pocket 11 and to provide a shoulder 23 for engaging against the outer `faceof the frame 10.

The bushing 14 is ofpreduced external diameter at its outer end to f provide clearance spacefor the cap, the cap'when applied in the pocket '11 entirely enclosing the bolt head.

- VAdjacent tothe pocket the body I10V-has the cylindrical passageway or space 24jparallel withV the pocket 11 and in this space ,a Y

as bymeansof 1 lock, cylinder 25 is secured a ring key 26.

Wil)

the cam 32 engaging in a transverse notch 33 y in the lock bolt so that when the lockvbarrel 'is turned Vby means of a suitable keythe bolt may be retracted.

Ther end 22 of the enclosing cap has .the circumferential locking groove 34 which reg isters with theopening 3l when the cap has been fully inserted with its shoulder 28 abutting against the front of the body l and the lock bolt has its front edge beveled as in- Ydicatedr at 35 so that vwhen the 'cap is inserted it will slide past the lock bolt whereafter 'the inner edge of rthe locs bolt will be in front ofthe rear shoulder of the locking groove 34 and the cap will belocked against removal.v The locking groove extending circumferentially around the cap the cap will be free to' turn in the pocket l1 but ywill be vlocked against axial dis-placement, thus protecting the'bolti head against unlawful application of a tool and preventing theft. v ToY prevent rattling of the cap I preferably provide aspring 36 at the inner end of the rcap for abutting 'against the bolt head when the cap is applied and to be compressed to hold the cap against rattling. The spring may hold itself in the cap by engaging in the circumferential channel 37 provided in the cap walli In the arrangement of vFigure 3 where the bolt head is in the form of a nut threaded onto the bolt shank, the spring is preferably of a diameter to receive the buter end of the shankas clearly shown in p Figure 3. f-

When it is desired to remove the lock structure, a key is Vinserted in the lock cylinyderand turned to retract the locking bolt whereupon the unlocked cap may be withdrawn from the pocket l1. Thebolt head is then. fully accessible at the outside of the lock body l0 for the application of a wrench or othertool so that the entire bolt (Figure I. i ha,

2) or the removable head (Figure 3) may be Withdrawnv whereafter the ylock structure may be removed and the tire rim will be free to be removed from the carrier ring. From a manufacturing standpoint it is testes spirit of the invention as defined inthe pended claims.

I claim as follows: Y 'y l. A lock structure for association with a bolt having a head, sai-d structure comprising a body having a passageway therethrough for receiving the shank of a bolt and the outer face of said body forming an abutmentrfor a head on said shank, said body having an Y annular pocket concentric lwith, andsurrounding said passageway, a'cap fitting in said annular pocket for enclosing the head ofthe bolt, said cap having va circumferential locking channel located within said pocket when said cap is applied th-erein, a locking cylinder supported by said body and alocking bolt extending from saidy lock cylinder into said pocket and saidflocking channel to lock said cap againstremoval.V v

'2.- i lock structure for association with a lbolt 'having a head, said structure comprising body having a pocket whose bottom wall has a passage for a bolt shank, a bushing within saidA pocket having a` passageway therethrough registering with `said bottomz wall passage for receiving arbolt shank, the outer end of said bushing forming an abutment for 'a bolt head,fthere being' a passageway lbetween said bushing and Vthe wall-of said chamber, a cap adapted vto engage in said passageway andto enclose a head cn said shank, and key Controlled; locking means supported on said body `and operable to lock said cap in said passage.vr y

'3. A lock vstructure having a passageway therethrough for receiving thesh'ank of a bolt, there being an'annular chamber insaid lock structure concentriciwith and `surrounding said passageway, acylindrical cap eX- tending into said chamber to receive the head on a bolt extending through said passageway,- said' cap. having a circumferential 'locking channel, a lock cylinder having a lo'ck boltprojecting into said chamber for engagement in said locking channel to lock sai'dcap in said chamber, said lock structurev being key oper abley to release' said locking bolt from said cap. v f' I In testimony` whereof IA have hereunto subscribed my name at North Chicago, Lake County, Illinois. Y i j v CHARLES H. .NEI-ILS.

more economical to have the bushingpart 14e a separate element, although it is to be understood that this part could be integral with the body 10 in which case the bolt head would I. engage against the outer face of the body and an annular pocket would beformed in the body for 'receiving the outer end of the (cap. i Y

Other changes and` modifications may .bej made without departing from the'- scope and 

